▎ 摘　　要

The aim of this letter is to study the fracture toughening in graphene/polymer nanocomposites. Finite element based multiscale model was developed for the proposed study; where graphene is modeled in atomistic scale, whereas displacement and stresses in polymer is modeled in continuum phase. 3D virtual crack closure technique in conjunction with the proposed multiscale model was employed to study the fracturetoughening in graphene/polymer nanocomposites.